Bag supporting and clamping mechanism



J. E. SCHMANDT..

BAG SUPPORTING AND cLAMPxNG MECHANISM.

APPLICATION FILED AUG.22. 1919. l 1,346,26. Ptlle July 13, 1920.

4 SHEETS-SHEET l.

J. E. SCHIVIANDT.

BAG SUPPORTING AND CLANIPING MECHANISNI.

APPLmATloN FILED A116222, 1919. Patented July 13 1920.

4 SHEETS-SHEET 2.

J. E. SCH MANDT.

BAG SUPPORTING AND GLANIPING MECHANISM.

APPLICATlON FILED AUG.22, 1919.

1,346,260. Patented July 13, 1920.

4 SHEES-SHEET 3.

J. E. SCH MANDT.

BAG SUPPORTING AND CLAMPING MECHANSM.

APPLICATION FILED AUG. 22. |919.

1,346,260. Patented July 139 1920.

4 SHEEISWSHEEI 4`.

JK ,dimm/dt" Y Urignal application x'led November 23, 1918, Serial No. 263,858.

of the members G, 7 and 8 Parent eprice.

JACOB EMIL 'SCHMANDI OF .EDDYVLLE OREGON.

BAG SUPPORTING AND CLAMPING MECHANISM.

August 22, 1919.

To ZZ whom may concern.'

Be Soi-minimi', a citizen of the United States, residing at Eddyville, in the county of Lincoln and State of Oregon, have invented certain new and useful Improvements in Bag Supporting and Clamping Mechanism,

of which the following is a specification.

This invention relates to bag or sack holders, and particularly to a bag or sack holder peculiarly designed for use in connection with the bag sewing mechanism forming the subject matter of my application, led November 23, 1918, Serial No. 263,858, of which application the present application is a division. The bag sewing mechanism illustrated in my aforesaid application is designed to sew up the mouth of a bag after the latter is filled with grain.

The general object of this present invention is to provide means whereby the mouth of a bag may be held in an open position and the mouth of the bag distended, and whereby the clamping members which engage the mouth of the bag may be shifted toward each other' to carry the two margins of the bag mouth together so as to permit the sewing mechanism to pass across the mouth of a bag and sew these two margins of the bag together.

A further object is to provide improved means for firmly engaging the mouth of the bag including clamping members engageable on each side of a thickness of fabric.

And a further object is to provide a bag mouth clamping means consisting of a plural ity of pivoted sections which will firmly engage all portions of the bag, and whereby the bag may be distended or closed.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings, wherein Figure l is a front elevation of a bag holder constructed in accordance with my invention;

Fig. 2 is a side elevation thereof;

Fig. 3 is a top plan view thereof;

Fig. 4; is a perspective view of the members 12 and 15; g

Fig. 5 is a sectional view of the slides 12 and the rails 6 supporting the slides, and the means for operating said slides;

Fig. 6 is a fragmentary perspective View Speciication of Letters Patent.

it known that I, JACOB EMILA Patented July 13, 1920.

Fig. is a top plan view of the bag clamps in their closed position;

Fig. 8 is a top plan view of the bag clamps in their opened or expanded position;

Fig. 9 is a section on the line 9-9 iof Fig. 7

Fig. 10 is a side elevation of the bag clamping jaws;

Fig. 1l is a topplan view of the bag clamping jaws in their closed position;

F ig. '12 is a section on the line 12-12 of F ig. 11.

Referring to the drawings, it will be seen that the bag holder comprises two similar. vertically disposed, triangular frames which may be mounted and secured in any suitable manner upon the discharge end of a threshing machine, each of these frames consisting of a vertically disposed member 5, horizontally disposed, outwardly projecting rails G, and upwardly inclined supporting braces 7. The rails 6 are connected by a transversely extending, horizontal angle iron 8 which is secured to the rails bymeans of the bracket plates 9. rThe angle iron S extends beneath the lower horizontal rails 6 and projects laterally some distance therefrom in order to support the sewing mechanism or the sewing machine which, however, is not illustrated in the present application.

Horizontal,l inwardly projecting track bars 10 are disposed parallel to the rails 6 and supported thereby in any suitable manner, the outer `ends of these track bars being' connected to the horizontal flange of the angle iron S. The inner ends of the track bars are connected by means of a baril. Slidably mounted upon these track bars 1U are slide barsl 12 which are slidingly en gaged with the tracks l() in any suitable manner and are supported thereby, these slide bars 12 being spaced at their inner ends by a transverse bar 13. rlhe outer ends of the bars 12 carry depending bracket plates lll secured to the vertical flange of an angle iron 15. The angle iron and the angle iron 8 coact with each other to support the. bag holding device, as will presently appear.

For thc purpose of oscillating the slide bars 12 and the connected angle iron 15, a transverse shaft 16 is mounted in suitable bearings on the members 6 and carries the crank arms 17. Thesecrank armsare pivotally connected to connecting rods 18 which, at their outer ends, are pivoted, at 19, to the Divided and this application filed serial No. 319,161.

slidebars 12. The shaft 16 provided with a crank 2O whereby the shaft may be oscillated, and each of the rods 18 is bowed inten mediate its ends, shown at 21., to permit the crank shafts .17 A to be shifted to the dotted line position in Fig. 5, with the connecting rods 1S lying flat upon the slide bars 12, in other words these bowed portions 21 accommodate the shaft 16. 1t will be 'obvious that by rotating the shaft 16 through the medium of the'crank 20, that the angle iron 15 will bel shifted toward the angle iron S or away from the angle iron 8.

`'Carried upon these angle irons 8 and 15 is av bag mouth clamping or gripping device which is now to be described. Referring to 7 to 12inclusive 'of the drawings, it will. be seen that the sac supporting or gripping device includes a pair longitudinal side plates 22 which are hingedly connected at their ends, as at 23, to' end plates Q/l. i The plates 2a at corresponding ends of the side ilates 22 are h'ingedly c onnected to Veach other, as 'at 25. Each of these plates is formed along its lower longitudinal edge with outwardlT projecting teeth 2G'. Guter, longitudinal, side plates 2? are hingedly connected to the upper edges of the inner plates 22, as at 28, and to these outer side plat s, the outer end plates 30 are hinged, as inuicated at'29, said plates 30 beinghinged to the corresponding inner end plates 24, at

' 31. The inner ends of the outer plates 30 are spaced from eachother, as clearly seen in Fig V9,. VThe outer side plates 27 are each provided .with flanges 32 projecting out wardly from the upper edge of the side lplate in spaced relation to the opposite ends of the plate.v rlhese plates 27 are also centrally formed with thev upwardly projecting, outwafdly inclined wings 33, to which handle rods fl are riveted et their extremities. rlhe Vs Q7 at the juncture ofthe. wings 3B iewith, are connected to the Vinner side i .ates 28 by means of the spring hinges 55. Theinner plates 22am also centrally formed with upwardly projectingwings or flanges 36 opposed relation to the wings The outer plates 2? and 80 are provided upon their lower edges with spaced teeth, as shown at 37, which are alternately disposed with relation tothe teeth. 26 on the inner plates and. proj ect toward the same.

ln the use of the sack gripping device, the upper cdgesfof the sack are adapted to be engaged between the inner and outer series of plates or jaws, the handles being forced toward each other so that the outer series of plates are moved outwardly. into angular Aspaced relation to the inner plates, as'shown in Fig. 9. rlhelhandle members are then released so that the spring hinges 85 force the outer series ofrplates inwardly to their nor mal positions. Thus, the teeth 26 and 37 on the lower edges of the two series of plates engaging in the opposite sides of the walls of the sack will securely grip and hold the same. T he sack isY then disposed in position between the angle bar-sj 8 and 15 with the flanges 32 resting upon the upstanding flanges of said bars. rlhus, the mouth of theA sackis held in a wide open position while the grain or other material'is fed' into the same (see Fig. 3). After the sack has been filled, the crank 2O is actuated as above explained.

moved inwardly and the pressure of the same against the sack gripping` and supporting device,'collapses said device,the ends thereof folding inwardly toward each other,

as seen in Fig. i, until. the mouth of the sack is securely closed. The opposed walls of the sack are. now stitched or sewed together at a point Vimmediately below the clamping gripping device.

lhe mechanism for sewinff the opposed. walls of the sack together is iully desci'ioeri land illustrated inmy copending application above referred to and, therefore, does not require any description at this place, but it may be said'that the sewing machine is mounted upon a lateral extension of the angle iron 8 and is designed to be shifted laterally away from the supportingffranie when the bag is being lilled and until the clamping membersY are' brought together, andfthat when the angle irons 15 and 8 are moved linto proximity with each Vother and rllhe outer angle `ba: 15 is thusV the bag clamping means is collapsed, then the sewing machine is shifted transversely of the bag'supporting frame and the closed mouth of the bag is stitched. -After the bag has been sewed and the sewing. mechanism has been retracted, itis shiftedllaterally beyond the bag supporting frame and then the handles 311 are drawn together to release 'the bag. The crank handle 2O is then actuated to carry the angle iron 15 outwardand to tirely around the mouth` of the bag so that there is no danger "of the bag becoming detached at any point from the distending'device. The fabric is clamped sofirmly between the jaws 22 and 27 and 31 and EZlthat the mouth of the Vwill bepositively engaged andthe wall Vof the bag collapsed or distended'by the' action ofv crank `20.

While I have illustrated and described a form of my invention whichl believe'to be thoroughlyV effective in practice,yet4 l do not wish to be limited to this, as it is obvious istA that many changes might be made in the de tails of construction and arrangement of parts without departing from the spirit of the invention.

I claim:

l. In combination, hired and movable bag supporting bars, manually operable means tor shifting the movable supporting bar toward the `fixed bar to close the mouth o't the bag, said means including a rotatable shaft, spaced rods pivotally connected at one of their ends to the inovablerbar, and means connecting the other ends of said rods to the shaft, whereby said bar is moved to its effective clamping position upon a partial rotation of the shaft.

2. In combination, iiXed and movable bag supporting bars, manually operable means for shitting the movable supporting bar toward the fixed bar to close the mouth of the bag, said means including a rotatable shaft, spaced rods pivotally connected at one of their ends to the movable bar, and link members fixed at one oi their' ends to the shaft and operatively connected at their other ends to the respective rods to move said supportingbai' relative to the lfixed bar to support the bag with the mouth thereof open or to close the mouth of the bag upon a partial rotation of said shaft.

3. ln combination, fixed and movable bag supporting bars, manually operable means tor shitting the movable su i Jortine' bar toward the V.fixed bai' to close the mouth oit a bag disposed between said bars, opposed sets ot collapsible and eXp-ansible bag mouth gril'iping means carried upon said bars and each set including a middle section and end sections hinged to the middle section, each of said sections having inner and outer jaws, one ot the jaws being lixed and the other being movable and resiliently urged toward the other jaw, between which the margin of iabric at the mouth of the bag may be clamped, the end sections of the two sets of mouth gripmng means being` hinged to each other, and means whereby the movable aws ot all o't the sections oit the two sets may be simultanemisly opened or closed.

Al. i bag holding device including hingedly connected side and end plates adapted to be arranged in extended relation within the mouth ol a bag to hold the same open, additional side and end plates hingedly connected to the corresponding first named plates `tor movement relative thereto, one pair oi the latter end plates being liingedly connected to one of the latter side plates and movable independently of the other side and end plates and constituting a clamping jaw 'for engagement upon the exterior of the bag wall, means normally urging the clamping jaws to closed position, and handle members iiXed to each oit the latter slide plates for opening the aws.

e. .A bag holding device comprising a series of outer jaw members hinged to each other, an opposite series of inner jaw members hinged to each other, a series of outer jaw members disposed outward of the first and second named series of jaw members, the outer jaw members of each series being hinged to each other, springs connecting each series of, outer gaw members to the adjacent series of inner jaw members and .urging said jaw members toward each other, manually operable means for opening said jaw members to release a bag, and means for causing one series of jaw members to operate each other and thereby shift the two series of jaw membersinto parallel relation or shiftthe jaw members in relative directions opposite to each other to thereby expand the bag holding devices.

6. A bag holding device comprising oppositely disposed side inner jaw members de signed to engage the opposite middle poi' tions of the mouth of a bag, end inner aw memberes hinged to the extremities of the side jaw members tor movement in the same plane as the inner j aw members, said end inner jaw members at opposite ends of the bag holding device being hinged to each other, oppositely disposed outer side jaw members extending parallel to the inner side jaw members, end outer jaw members hinged to the outer side jaw members for movement in the same plane thereat, the outer jaw members on one side being pivotally coiinected to the inner jaw members on the same side for movement toward and from the inner jaw members, and springs urging the inner and outer jaw members toward each other.

7. A bag holding device comprising oppositely disposed side inner jaw members designed to engage the oppositely middle portions of the mouth of a bag, end inner aw members hinged to the extremities of the side jaw members for moifemeiit in the same plane as the inner jaw member, said end inner jaw members at opposite ends of the bag holding device being hinged to each other, oppositely disposed outer side jaw members extending parallel to the inner side jaw members, end outer jaw; members hinged to the outer side yaw members for vmovement in the saine plane thereat, the

outer jaw members on one side being pivot` ally connected to the inner j aw members on the saine side for movement toward and from the inner jaw members, springs urging the inner and outer jaw members toward each other, and handle members attached to the middle portions of' the outer side jaw members.

8. A bag holding device including oppositely disposed middle bagclamping devices, oppositely disposed end bag-clamping devices,each of said clamping devices having an outer, and linnei` aw, the j aWs being resilientiyl urged toward' each other, the bageiznnypiinq' devices being .hingedly Connected te each other. Vfor movement toWai'd or from each other in the-same plane, and means disposed on the oppesiteiy disposed middle bagclamping devices. Wheieby the jaws may be sep-aimed against theaetion of said springs,

said means causing the separation 03:" `the middle baggelamping devices and ofthe end bag clamping devices.

9. 'In a'bag supporting mechanism, iified and movable bag supporting bars, manually opeiable means for shifting the movabie snppei'tingbars toward or ioin therfxed bar to (.iose o1' open the month of the bag, and a bag holder comprising bag gripping j aws foi'ined in sections, the sections being` hingedto each other Whei'eby the sections may be expanded ei eiosedinto a parailel relation, eeitain of said Sections being provided with oppositely disposed anges adapted to rest on and be supported by said jaws. Y

'Y n testimony whereof I aix my signature.

JACOB EMIL SCHMANDT, 

